moodle/admin/webservice/tokens.php

<?php

// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Web services tokens admin UI
 *
 * @package   webservice
 * @author Jerome Mouneyrac
 * @copyright 2009 Moodle Pty Ltd (http://moodle.com)
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

require_once('../../config.php');
require_once($CFG->libdir.'/adminlib.php');
require_once('forms.php');

$PAGE->set_url('/admin/webservice/tokens.php', array());

admin_externalpage_setup('addwebservicetoken');

require_login();
require_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM));

$returnurl = "$CFG->wwwroot/$CFG->admin/settings.php?section=webservicetokens";

$action  = optional_param('action', '', PARAM_ACTION);
$tokenid = optional_param('tokenid', '', PARAM_SAFEDIR);
$confirm = optional_param('confirm', 0, PARAM_BOOL);


////////////////////////////////////////////////////////////////////////////////
// process actions

if (!confirm_sesskey()) {
    redirect($returnurl);
}

switch ($action) {
    
    case 'create':
        $mform = new web_service_token_form(null, array('action' => 'create'));
        if ($mform->is_cancelled()) {
            redirect($returnurl);
        } else if ($data = $mform->get_data()) {
            ignore_user_abort(true); // no interruption here!

            //generate token
            $generatedtoken = md5(uniqid(rand(),1));

            // make sure the token doesn't exist (even if it should be almost impossible with the random generation)
            if ($DB->record_exists('external_tokens', array('token'=>$generatedtoken))) {
                throw new moodle_exception('tokenalreadyexist');
            } else {
                $newtoken = new object();
                $newtoken->token = $generatedtoken;
                $newtoken->externalserviceid = $data->service;
                $newtoken->tokentype = 2;
                $newtoken->userid = $data->user;
                //TODO: find a way to get the context - UPDATE FOLLOWING LINE
                $newtoken->contextid = get_context_instance(CONTEXT_SYSTEM)->id; 
                $newtoken->creatorid = $USER->id;
                $newtoken->timecreated = time();
                $newtoken->validuntil = $data->validuntil;
                if (!empty($data->iprestriction)) {
                    $newtoken->iprestriction = $data->iprestriction;
                }
                $DB->insert_record('external_tokens', $newtoken);
            }
            redirect($returnurl);
        }



        //ask for function id
        admin_externalpage_print_header();
        echo $OUTPUT->heading(get_string('createtoken', 'webservice'));
        $mform->display();
        echo $OUTPUT->footer();
        die;
        break;

    case 'delete':
        $sql = "SELECT
                    token.id, token.token, user.firstname, user.lastname, service.name
                FROM
                    {external_tokens} token, {user} user, {external_services} service
                WHERE
                    token.creatorid=? AND token.id=? AND token.tokentype = 2 AND service.id = token.externalserviceid AND token.userid = user.id";
        $token = $DB->get_record_sql($sql, array($USER->id, $tokenid), MUST_EXIST); //must be the token creator
        if (!$confirm) {
            admin_externalpage_print_header();
            $optionsyes = array('tokenid'=>$tokenid, 'action'=>'delete', 'confirm'=>1, 'sesskey'=>sesskey());
            $optionsno  = array('section'=>'webservicetokens', 'sesskey'=>sesskey());
            $formcontinue = new single_button(new moodle_url('/admin/webservice/tokens.php', $optionsyes), get_string('delete'));
            $formcancel = new single_button(new moodle_url('/admin/settings.php', $optionsno), get_string('cancel'), 'get');
            echo $OUTPUT->confirm(get_string('deletetokenconfirm', 'webservice', (object)array('user'=>$token->firstname." ".$token->lastname, 'service'=>$token->name)), $formcontinue, $formcancel);
            echo $OUTPUT->footer();
            die;
        }
        $DB->delete_records('external_tokens', array('id'=>$token->id));
        redirect($returnurl);
        break;

    default:
        break;
}

redirect($returnurl);